Principal Software Engineer- Flight Systems

Principal Software Engineer — Space Systems

Location: Greater Denver, CO Area (Hybrid: 3–5 days onsite)
U.S. Persons Only — No visa sponsorship

A fast-growing space systems organization is seeking a Principal Software Engineer to lead development of ground and flight software for lunar and deep-space missions. This role is ideal for a senior engineer who thrives in mission-critical environments and wants to directly shape the future of space exploration.

What You’ll Do

• Lead architecture, design, and development of mission software for spacecraft operations.

• Own the full SDLC: requirements, implementation, testing, integration, and mission support.

• Collaborate with aerospace, mission, and systems engineering teams to translate mission needs into robust solutions.

• Mentor engineers and help establish technical standards and best practices.

• Communicate technical decisions clearly to internal and external stakeholders.

What You Bring

• Expert-level C++ skills; proficiency in Python or another high-level language.

• Strong knowledge of Linux, software architecture, and object-oriented design.

• Experience with Git or similar version control tools.

• Ability to solve complex problems independently and lead technical direction.

• Excellent communication and collaboration skills.

Nice to Have

• GitLab CI/CD

• AWS/EC2

• Embedded or real-time systems

• Aerospace/spacecraft experience

• AI/ML exposure

Education & Experience

• Bachelor’s degree in Computer Science, Engineering, or similar

• 7+ years of relevant software experience

Compensation & Benefits

• Base Salary: $125,000 – $155,000, depending on experience

• Signing bonus

• Health insurance

• 401(k)

• Flexible time off

• Quarterly incentives

• Relocation assistance